Machine for cutting and screw-threading tubes



6 Shets-Shee't 1.

(No Model.)

I A. SAUNDERS. MACHINE FOR GETTING AND SCREW THRBADING TUBES; &c.

IIAE k INVENTOR WITNESSES 5 N. PETERS. Phnlo-Lilhngmphnr. Wnshinglnn. o.c.

(No Mbdel.) e Sheets-Sheet 2,

A. SAUNDERS. MACHINE FOR CUTTING AND SGREW THREADING TUBES, a

No. 372,490. Patented Nov; 1, 1887.

WITNESSES 1N VE N TOR N. PETERS. Pholo-Lnhngmpher. Washmglnn. D,Cv

( M m 6 Sheets-Sheet 3.

A; SAUNDERS.

MACHINE FOR CUTTING AND SCREW THREADING TUBES, &c.

No. 372,490. Patented Nov. 1, 1887.

mmvroze WITNESSES WKYQXM A TTORNE Y N4 PETERS, PMlo-Lilhngnphur. wminmn. D. c.

(N0 Mbdel.) 6 Sheets-Sheet 4 A. SAUNDERS. MAUHINE FOR CUTTING AND SCREWTHREADING TUBES, &c. No. 372,490.

Patented Nov. 1,- 1887.

INVENTOR M wwow BY d e A TTORIVEY WITNESSES:

(Named-e1.) 6 Sheets-Sheet 5.

A. SAUNDERS. MACHINE FOR CUTTING AND SCREW THREADING TUBES, &c. No.372,490. Patented Nov. 1, 1887.

v 4 I 6 W I I Z0 I 7' Z0 1 F 'fi" g" L WITNESSES: A INVIIEN TOR MfhWAAAA M 4 ATTORNEY N. PETERS Prmw-um nimer. Washinglnm n. c.

(No Model.) 6 SheetsSheet 6.

A. SAUNDERS.

MACHINE FOR CUTTING AND SCREW THREADING TUBES, 6w.

No. 372,490. Patented Nov. 1, 1887.

1 a Q 4 i mdlwffuwwn J m J4 m N. PETERS, mmrumv n ner, wmm mn. n c.

UNITED STAT S PATENT ()Fr'rcn.

ALEXANDER SAUNDERS, OF YONKERS, NEW YORK.

MACHINE FOR CUTTING AND SCREW-THREADING TUBES, 80C.

SPECIFICATION forming part of Letters Patent No. 372,490, dated November1, 1887.

Serial No. 234,826.

(No model.)

To all 10740112, it may concern:

Be it known that I, ALEXANDER SAUNDERS, a citizen of the United States,residing at Yonkers, in the county of \Vestchester'an'd State of NewYork, have invented certain new and useful Improvements in Machines for\Vorking Pipes, Cylindrical Rods, 850.; and I do hereby declare that thefollowing is a full, clear, and exactdescription of the invention, whichwill enable others skilled in the art to which it appertains to make anduse the same.

This invention is principally intended for cutting screw threads uponcylindrical rods, tubes, pipes, &c.; but certain of its features may beadvantageously employed in connection with the mechanism fortransversely cutting or separating such articles.

The invention comprises certain novel combinations of parts whereby therod, pipe, or tube to be operated upon may be readily brought to andretained in the requisite position with reference to the screw-cuttingdies, or the cutting mechanism, as the case may be, whereby greatstability is given to the article while being worked or operated upon bythe screw-cutting dies, or by the cutting-off devices, as the case maybe, whereby the speed and power of the rotating head, provided to carrythescrew-cntting dies or cutting-off devices, as the case may be, in itsoperation with the other portions of the mechanism, may be varied tosuit the exigencies of the work, whereby provision is made for retainingthe axis of the article to be operated upon in due relation with theaxis of motion of the screwcutting dies, or of the cuttingoif devices,as the case may be, whereby provision is made for releasing the saidhead from the feed mechanism which regulates the passage of the articleto the screwcutting dies, in order to perniit the machine to be appliedto other uses, whereby provision is made for a very accurate andeffective feeding of the article to be screwthreaded to and through thescrewcutting dies, and whereby provision is made for the adjustment ofthe jaws which hold the article to be operated upon in such manner thatthe axis of said article may be brought accurately into the axial orcentral line of the screw-cutting dies.

Figure 1 is a front elevation and partial sectional view ofa machineembracing my said invention.. Fig. 2 is a detail view, on a largerscale, of certain parts ofsaid machine. Fig. 3 is a horizontal sectionalview, taken in the line 2 z of Fig. 1, of certain parts included in saidmachine. Fig. 4 is a vertical transverse sectional view taken in a planeat right angles to Fig.1 and in theline yy of Fig. 1. Figs. 5 to 9,inclusive, are detail views, on alarger scale, of certain parts includedin said machine. Fig. is a side elevation as seen from the right-handside of Fig. 1. Figs. 11 to 14, inclusive, are detail views of certainparts included in said machine. Figs. 15, 16, 17, 19, 20, and 21 aredetail views of certain parts of said machine, and Fig. 18 is a plan ortop view of said machine.

A is the supporting-frame of the machine, of any suitable construction.

Bis a bracket, which contains the box or bearing a of the driving-shaftt", the opposite end of which is sustained in suitable bearings, 12 I),provided in two standards, 0 0, preferably cast in one, with across-bar, a, and which are secured upon the supporting-frame A in anysuitable manner. seen from the rear end in Fig. 1, and one of them isshown from the side in Fig. 10. At the inner side of each standard,nearits upper edge, is a horizontal groove or guide, 0, more fully shownin the section portion ofFig. 1, and also indicated in the dottedoutline in Fig. 10. Int-o these guides c c are fittedcorrespondingly-shaped horizontal splines d, provided upon the sides ofa cage, D, which carries a chuck, herein presently described, and whichhas extending forward a sleeve, B, threaded externally at its forwardend, as indicated at I) in Fig. 4. is placed within this sleeve Bduri'ngthe working thereof, and as near as may be to the central or axialportion thereof. At the inner side of each of the lateral portions 0 ofthe cage D is a vertical guide, f, which fits into a correspondinggroove in the adjacent side or edge of a frame, E, in thelower part ofwhich is the lower jaw, E, of a gripping-chuck. The opposite innervertical edges of this frame E constitute guides, which fit intocorrespondingly'shaped vertical grooves formed in the ends of the upperjaw, E, of said chuck.

The rod, pipe, or tube to be worked These standards are This upper jaw,E, is suspended from the lower extremity, a, of a screw, g, whichextends downward through the central space of a double nut, h, which isitself screwed into a nut, it, provided in the boss h at the top of theframe E. Into the inner thread of the double nut h is screwed ascrew-bolt. i, as more fully represented in Figs. 2 and 3. Thisscrewbolt 1; may be turned as required by a suitable lever, j, providedin its head, as represented in Fig. 2. This screw-bolt i is made hollowand provided with an internal screwthreadthe reverse of the externalscrewthread of said screw-bolt, but of the same pitch-said internalthread of said screw-bolt 0' receiving the upper end of the-screw g,from which is suspended the upper-jaw, E, of the gripping-chuck, ashereinbetore explained. By turning the screw-bolt i in one direction,the external thread thereof lowers the frame E, and consequently thelowerjaw, E, thereof, and simultaneous with this the internal thread ofsaid screw-bolt i raises the screw 9 and moves upward the upper jaw, E,in the same ratio as the jaw E, aforesaid, so that by the said means thesaid jaws may be moved.

' to or from each other to clasp or release the I while being'threadedor operated upon.

pipe or article to be held between them It is necessary, however, forthe purposes of my invention,that the axis of the space between thejaws,when the same are brought toward each other, should be accuratelycoincident with the axis of motion of the threading or cutting devices,as the case may be; and in order that thejaws E.and E may be bodilyraised and lowered to adjust the axis of the said space to said relationwith the axis, around which move the threading or cutting devices, asthe case may be, is provided the double nut h, hereinbet'ore described,so that by turning said double nut in one direction or the other, theframeE may be raised or lowered, as occasion may require. 7 i Thescrew-bolt i, it is to be observed, is suspended in a suitable bearing,It, provided at the upper end of the cage D and suitably placed aroundthe vertical neck or journal k of said screw-bolt. Theexternally-threaded sleeve B extends forward into the rearmost part of asleeve, F, which latter is provided upon the rearmost side ofaface-plate, F,upon the circumerfence of which, and concentric with theaxis thereof, are cogs or teeth m, so that the said teeth and face-platetogether constitute not only a face-plate, for purposes hereinafterexplained, but also a spur-wheel, by means of which motion around theaxial line of the space between thejaws E E is secured.

Motion is given,th rough the teeth or gear m, to the faceplate F, ashereinafter explained, the said face-plate and its sleeve F beingsupported in asuitablebcaring or journal box F, duly connected with thestationary or fixed part of the machine. At the inner end of the sleeveF, and at suitable distances apart, are

2 eve r90 rectangular openings or sockets, in which are placed thesections a of a sectional nut, H, the structure and purposes of whichare hereinafter set forth. these sections a are threaded to act inconnection with the screw-thread of the sleeve B. These sections may beof any desired number; but it is preferred that there be four of them,arranged equidistant around the circumference of the sleeve F. Each'ofthe sections a has attached to it an outwardlyextending bolt, s,whichprojects through a slot, m, in an adjacent cam portion, 112., of a camring, G, fitted around and external to the sleeve F and the nutsectionsn. The heads 8 of the boltss ride upon the outer surface of the camportions m,aforesaid, and the cam-ring G is provided with a lever orhandle, G, by which it may be turned around the axis of the sleeves Fand B. V

When turned in onedirection, the cam portions m depress the nutsectionsn, so that they mesh with the screw-thread of the sleeve B, and therebyenable the said sleeve B, together with the chuck connected therewith,to be moved inward or outward, as the case may be, by the rotation inone direction or the other of the sleeve F; or, in other words,

of the face-plate F, attached to said sleeve. The cam-ring G is keptfrom moving out of place toward the face-plate F by the adjacent edge ofthejournal F, and from moving out of place in the opposite direction bya collar, G, secured to the inner end of the sleeve F.

The pipe, tube, or cylindrical rodto be operated upon being thrustforward between the jaws E and E and gripped thereby, as hereinbeforeexplained, and any suitable screwthreading mechanism being secured, inthe ordinary or in any appropriate manner, upon the face-plate F, torotate with the said faceplate and around the axis of the pipe, tube, orcylindrical rod, as the case may be, the rotation in the requisitedirection ofthe said face-plate F, and sleeve F causes the nut-sectionsnto feed inward the sleeve B, and consequently the pipe, tube, orcylindrical rod, as the case may be, to the screw-threading device ormechanism carried by the face-plate, as aforesaid. WVhen the requisitelength of the pipe has been duly threaded, a reverse movement of thecam-ring G causes the cams 4n thereof to lift the nut-sections nout ofcontact with the thread of the sleeve B, thereby permitting the sleeve Fand face-plate F to- The inner surfaces of.

"t hereto.

ameter of this bushing may be proportioned to that of the article to beoperated upon by the machine. Motion is given to the faceplate F,through its gearteeth. m, from a pinion, 1', on the opposite end of theshaft r of which is a beveled pinion, 0'', which gears into a similarbeveled pinion, t, the shaft t of which is provided with a spur-wheel,a, which gears into a Spurpinion, a, on another shaft, to, which is alsoprovided with a spur wheel, to, which latter gears into a spur-pinion,it, loose on the shaft t, and which,as represented in Fig. 18, has theconepulleys A" attached The shaft a is provided with a longitudinalfeather, a, which passes through a suitable groove, provided, to thebore of the pinion a, so that when the said pinion is brought into gearwith the spur-whcel a. as shown in Fig. 16, motion will be transmittedfrom the one to the other, whereas by sliding the pinion a along thefeather a it may be brought out of gear with the wheel '16, so that thelatter may rotate independently.

Fast upon the inner side of the pinion 20" is provided the part I of aclutch, I, the other part, 1', of which is fast upon the shaft t. Thepart I is of such radius as to pass within the circumferential flangeI)" of the part I, the latter being provided internally with recessesc". In the part I is a radial slot, 0", through which is placed theboltf, the elongated head 1 of which is on the side of the part 1, contiguous to the part I, while the nut h of said bolt is on the other oropposite side of the part I. The several parts of the clutch I arerepresented in Figs. 11 to 14, inclusive.

When the boltf is moved to the inner end of the slot 0, the parts I andI are disconnected, so that no motion is transmitted from the pulleys Ato the shaft t; but when the said bolt is moved outward to the outer endof the slot 0" its head g. is fitted into one or the other of therecesses c, and the bolt being duly held in position by tightening itsnut It, mo-

tion is transmitted from thepart l to the part I, and thereby from thepulleys A" direct to the shaft 3, and thence, through the beveledpinions t and r, to the face-plate, the precaution being first taken tomove the pinion u out of gear with the spur-wheel a, which may be doneby hand. By the means just described a comparatively high velocity isgiven to the rotation of the faceplate F. \Vhen less velocity andgreater' power are required, the parts or sections 1 and I of the clutchI are disconnected to permit the pulleys Aand spur-pinion w to run looseupon the shaft t, and the pinion a is brought into gear with thespur-wheel a, whereupon motion is transmitted from the pinion w to thespur-wheel w, thence through the pinion a and spur-wheel a to the shaftt, and thence to the beveled pinions t and r to the face-plate F. Inorder to retain the pinion a in its two distinctive posit-ions,hereinbefore described, there is pivoted adjacent thereto a doublereversible hook, S, the construction and operation of which isillustrated in Figs. 17, 19, 20, and 21. Vhen the one claw O of thisdouble hook S is swung over to the shaft a, as represented in Fig. 21,it passes on the inner side of the pinion a, and thereby retains thesaid pinion in gear with the spur-wheel a. Vhcn the hook is reversed,the pinion a being first brought out of gear with the spur-wheel a, theopposite end or portion D of the hook is brought on the outer side ofsaid pinion, as shown in Figs. 19 and 20, and prevents the same fromcoming into gear with the spurwheel a.

In order to move inward and outward the sleeve B, and the chuck carriedthereby, a rack, L, is provided at the bottom of the cage D, whichcarries the said chuck, and into this gears a toothed quadrant orsector, M, the shaft N of which is provided with a lever, It, by whichsaid shaft and sector may be rocked or turned in one direction or theother,thereby giving the requisite rectilinear movement to the sleeve Band to the chuck.

\Vhat I claim as my invention is'- 1. The combination of the sleeve F,bearings F, for said sleeve, face-plate F, provided to the said sleeve,sleeve B, longitudinally adjustable with referenccto the sleeve F, cageD, provided to the sleeve 13, provided with the bearing is and guides f,the frame E, having nut It and double nut h, internally-threadedscrewbolt ii, screw 1 and gripping jaws E E, all substantially as andfor the purpose herein set forth.

2. The combination of the sleeve F, bearings F, for supporting saidsleeve, face-plate F, provided to said sleeve, externallythreaded sleeveB, a sectional nut, H, constructed and arranged to grasp and rcleasethescrew-th read b of the sleeve l3, the cage D, provided to the sleeve 13.and constructed with the guides f, the jaws E E, adj ustable within theframe E, and devices for adjusting the said jaws with reference to eachother and to the axis of the sleeves B F, substantially as and for thepurpose herein set forth.

The combiinttion, with the face-plate F and sleeves F and B, of the cageD, provided with guides arranged in a plane coincident with the axis ofthe sleeves F and B, andjaws E E, supported by the said cage and adjustable with reference to the axial line of the sleeves F and B,substantially as and for the purpose herein set forth.

4. The combination, with the faceplate F and sleeves F and B, of thecage D, provided with guides f, the frame E, adjustable upon said guidesf, jaws E E, and devices for adjusting the said frame F and jaws E Ewith I tional nut H, composed of the cam-ring G,

constructed with slots m, the nut-sections n,

j and the bolts s, having heads 8, all substanfeeding action of thenut-sections a, substantially as and for the purpose herein set forth.

7. The combination, with the sleeve F, having the faceplate F, and withthe externally threaded sleeve B, carrying the mechanism for feeding thearticle to be worked, of the sectional nut H, composed of the cam-ringG, constructed with slots m, nut-sections n, and bolts 8, having heads 8for feeding and releasing the sleeve B, the rack L and sector M, for

actuating the sleeve B with reference to the sleeve F when released fromthe feeding action of the nut-sections n, the cage D, constructed withguidesf, the frame E, jaws E E, and devices for adjusting the said frameE and jaws E E with reference to each other andto the T cage,substantially as and for the purpose herein set forth.

8. The combination, with the sleeve F, having the face-plate F, and withthe externallythreaded sleeve B, carrying the mechanism for feeding thearticle to be worked, of the sectional not H, composed of the cam-ringG, constructed with slots m, nut-sections n, and bolts 8, having heads 8for feeding and releasing the sleeve B, the rack Land sector M, foractuating the sleeve B with reference to the sleeve F When released fromthe feeding action of the nutsections n, the cage D, constructed withlateral guides coincident with the axis of the sleeves F B, and providedwith grippingjaws for holding the article to be worked upon,substantially as and for the purpose herein set forth.

9. The combination, with the sleeve F, having the face-plate F, and withthe externallythreaded sleeve B, carrying the mechanism for feeding thearticle to be worked, of the sectional nut H, composed of the canrringG, constructed with slots m, nut-sections n, and bolts 8, having heads 8for feeding and releasing the sleeve B, the rack L and sector M, foractuating the sleeve B with reference to the sleeve F when released fromthefeeding action of the nut-sections a, thecage D, constructed withlateral guides coincident with the axis of the sleeves F Band with'theguides f, a frame, E, adjustable on said guides f, jaws E E, adjustablein the frame E, and devices for adj usting said jaws and frame withreference to each other and to the cage D, substantially as and for thepurpose herein set forth.

10. The combination, with the sleeve F, having the face-plate F, andwith the externallythreaded sleeve B, carrying the mechanism for feedingthe article to be worked, of the sectional nut H, composed of thecam-ring G, constructed with slots m, nut-sections n, and bolts 8,having heads 8 for feeding and releasing the sleeve B, the rack L andsector M, for actuating the sleeve B with reference to the sleeve F whenreleased from the feeding action of the nutsections n, the cage D,constructed with lateral guides, a frame, E, adjustable on said guidesf, jaws E E, adjustable in the frame E, nut h, double nut 71,internallythreaded screw-bolt i, and screw 9, for adj usting the jaws EE and the frame E with reference to each other and to-the cage D,substantially as and for the purpose herein set forth.

11. The combination, with the face-plate F and its sleeve F, of thethreaded sleeve B, provid'ed with jaws for holding the article to beworked upon, the sectional nut, composed of the slotted cam-ring G,nut-sections n, and bolts 8, substantially as and for the purpose hereinset forth.

12. The combination of the sleeve F, having the face. plate F, theexternally-threaded sleeve B, carrying the mechanism for feeding thearticle to be worked, the sectional nut H, a spur-wheel, a, connected bysuitable gearing with the sleeve F, or its face-plate F, shaft a,spur-pinion a, movable on said shaft and with reference to thespur-Wheel u, and the double reversible hook S, having ends 0 and D, for

ALEXANDER SAUNDERS.

Witnesses:

CHARLES A. HERBERT, ALBERT O. AUBERY.

ICO

